315982 has 4 divisors (see below), whose sum is σ = 473976. Its totient is φ = 157990.

The previous prime is 315977. The next prime is 316003. The reversal of 315982 is 289513.

It is a semiprime because it is the product of two primes.

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 315982.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78994 + ... + 78997.

It is an arithmetic number, because the mean of its divisors is an integer number (118494).

2³¹⁵⁹⁸² is an apocalyptic number.

315982 is a deficient number, since it is larger than the sum of its proper divisors (157994).

315982 is a wasteful number, since it uses less digits than its factorization.

315982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157993.

The product of its digits is 2160, while the sum is 28.

The square root of 315982 is about 562.1227623927. The cubic root of 315982 is about 68.1115527704. Note that the first 3 decimals are identical.

The spelling of 315982 in words is "three hundred fifteen thousand, nine hundred eighty-two".